code: def test_min_difference(supports, idx_correct_label, expected):
      result = min_difference(supports, idx_correct_label)
      assert np.isclose(result, expected, atol=0.01).all()
  
file_path: DESlib/deslib/tests/util/test_prob_functions.py
imports: import numpy
  import pytest
  from deslib.util.prob_functions import ccprmod, log_func, min_difference, softmax, exponential_func, entropy_func
label_desc: Use image node_id 9 for calling a global function with example usage: test_min_difference(supports, idx_correct_label, expected) without return types